碰到json数据、里面格式众多、list+string[]+等等。具体json参数如下:
eg:以下为接口参数:
"responseData":{
"brandCode": "10000002",
"brandName": "健康卡",
"channelId": 20001,
"channelIdOldPc": "wap-fmall-yztapp",
"channelIdOldWap": "wap-fmall-yztapp",
"createBy": "creator",
"createDate": "2016-04-26 10:30:40.000830",
"ext": {
"main_product_icon_url": ["http://www.google.com0",
"http://www.google.com1",
"http://www.google.com2"],
"product_tag": "产品标签",
"product_feature": "product_feature",
"faq": [{
"answer": "您好!客服156,具体的支付方式需要以您的结算页面显示为准。 感谢您对京东的支持!祝您购物愉快0",
"questionType": "type0",
"question": "可以12期免息吗?0"
},
{
"answer": "您好!客服156,具体的支付方式需要以您的结算页面显示为准。 感谢您对京东的支持!祝您购物愉快4",
"questionType": "type4",
"question": "可以12期免息吗?4"
}],
"life_rule_mind": "一次一张",
"life_except_date": "20150507,20150607,20150707"
},
"updateDate": "2016-04-26 10:30:40.000830",
"vendorCode": "10000000",
"vendorName": "顺德商户",
"graphic_insurance": [{
"url": "1",
"name": "1"
}],
}
上述为接口返回的json数据。格式太多、只罗列出这些。首先一开始想到用jsonObject。后来解析着解析着各种莫名的错误。字段类型不匹配啦,日期格式错误啦等等等。搞的头大的一匹~后来百度了一把,发现了谷歌的Gson(不过需要个jar包、自己找吧。太忙了这会儿);
废话少说,上代码:
字段+格式太多了、根本不可能一个个的解析(一百七十多个、表问我为毛这么多。我也想知道为什么)。由此开启了Gson之路
//action
方法开始{
JSONObject jsonObject = EsgClientUtil.sendProductDto(ESG_URI_INFO, baseProductDto); //ESG_URI_INFO;自定义接口路径;
String responseCode = jsonObject.getString("responseCode");
String responseMessage = jsonObject.getString("responseMessage"); //responseCode responseMessage 此处是返回调用接口的返回码和是否成功信息
if (jsonObject == null || !"000000".equalsIgnoreCase(responseCode)) {// 调用失败
serviceResponse.setSuccess(false);
serviceResponse.setResponseMsg("调用接口失败。" + responseMessage);
return serviceResponse;
}
serviceResponse.setSuccess(true);
String reponseStr = "";
if(jsonObject.has("responseData")){ //接口是否成功返回数据
JSONObject responseData = jsonObject.getJSONObject("responseData");
reponseStr = jsonObject.getString("responseData");
//使用Gson进行json解析 (多个json解析+list数组等) //解析开始
Gson gson = new Gson();
BaseProductDto responseBaseProductDto = gson.fromJson(reponseStr, BaseProductDto.class);
JSONObject extJson = responseData.getJSONObject("ext"); //对应上面eg数据里的ext;
//获取ext扩展信息里的json格式数据,dto中用list<map>接收。并到页面遍历出 子选项
String ext = extJson.toString();
if(!"".equals(ext) && ext != "" && !"[]".equals(ext)){
ScalableMessageDto s = gson.fromJson(ext, ScalableMessageDto.class); //对应实体类;进行匹配解析
responseBaseProductDto.setScalableMessageDto(s);
以上就是数据的初步解析;如果里面有更多json嵌套等:继续往下解析就是了:
eg(举例):
String productSkuStr = responseData.getString("productSku"); //如果又来一层。接收key:productSku。然后解析就是了
if(!"".equals(productSkuStr) && productSkuStr !="" && !"[]".equals(productSkuStr)){
JSONObject productSku = JSONArray.fromString(productSkuStr).getJSONObject(0);
String sku = productSku.getString("sku"); //productSku 里面的key:sku
if(!"".equals(sku) && sku != "" && !"[]".equals(sku)){
ProductSkuDto productSkuDto = gson.fromJson(sku, ProductSkuDto.class); //实体类关联的productSkuDto
responseBaseProductDto.setProductSkuDto(productSkuDto);
}
}
//实体类
public class BaseProductDto implements Serializable{
/**
* 扩展信息、引入关联实体类
*/
private ScalableMessageDto scalableMessageDto;
/**
* skuDto信息
*/
private ProductSkuDto productSkuDto;
//....setter/getter
}
那么问题来了。方法到这差不多结束了。字段呢?繁杂且冗余的字段类型怎么定义呢。接着走~
//对应BaseProductDto 引入的实体类
public class ScalableMessageDto {
private static final Log LOG = LogFactory.getLog(ScalableMessageDto.class);
//公共信息模块
private List<String> publish_area; //开发文档为array格式、即允许逗号分隔多个存储等。eg:1003,1004,1008
private String deal_agreement;
private String product_slogan;
private String product_introduce;
private String product_feature;
private String product_consult;
private List<Map>faq;
// List<Map> 文档为json格式。eg:{"result":[{"questionType":"","qa":[{"question":"","answer":""},{"question":"","answer":""}]},
//{"questionType":"","qa":[{"question":"","answer":""},{"question":"","answer":""}]}]}。 即多个文本组合、一同存入;
private String faq_url;
private List<String> main_product_icon_url;
private List<String> list_product_icon_url;
private List<String> product_tag;
private List<Map> graphic_insurance;
private List<Map> insurance_respon;
//。。。。setter、getter
}
以上list<map>类型的优势是什么呢;只是在实体类中格式化后。页面就省事了。只需要<c:foreach>遍历即可获取所有json数据;
eg:
jsp、、faq字段为例
<tbody id="questionType" name ="questionType">
<c:forEach var="faq" items="${baseProductDto.scalableMessageDto.faq}" varStatus="faqSize">
<tr>
<td><h4>常见问题<c:out value="${faqSize.index+1}"></c:out></h4></td>
<td class="in w400">
<div class="qa" name="qa"><br/>
<span>问题<input type="text" class="w400 ml15 js_provisionName" disabled="disabled" name="question" value="<c:out value="${faq.question}"/>"/><b class="question"></b></span><br/><br/>
<span>答案<input type="text" class="w400 ml15 js_downloadUrl" disabled="disabled" name="answer" value="<c:out value="${faq.answer}"/>"/><b class="answer"></b></span><br/><br/>
<span><div style="width:800px;height:1px;margin:0px auto;padding:0px;background-color:#D5D5D5;overflow:hidden;"></div>
</span>
</div>
</td>
</tr>
</c:forEach>
</tbody>
//ps:以上为本人工作时遇到并已解决的问题。拿出来与大家共享。[/拜谢]、
如有转发请注明出处。尊重原创~从这里开始